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nika2105 [10]
3 years ago
14

Help Please & thanks!

Mathematics
1 answer:
Travka [436]3 years ago
3 0

Answer:

14 out of the total class of 35 are boys

Step-by-step explanation:

35 / 5 = 7

7 * 2 = 14

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-4=x/20-5 Solve for x
garik1379 [7]

Answer:

x = 20

Step-by-step explanation:

I'm no mathematician but...

- 4 = x / 20 - 5

If you move the five to the other side using addition you get:

1 = x / 20

Then multiply 20 on both sides

20 = x

6 0
3 years ago
determine the radius of the cone ,if the voulime of the cone is 125 cm to the power of 3 and the height of the cone is 12cm. Rou
Salsk061 [2.6K]

For this case we have that by definition, the volume of a cone is given by:

V = \frac {1} {3} * \pi * r ^ 2 * h

Where:

r: It is the radius of the cone

h: It is the height of the cone

According to the statement data we have:

h = 12 \ cm\\V = 125 \ cm ^ 3

Substituting in the formula:

125 = \frac {1} {3} * \pi * r ^ 2 * 12

We cleared the radius:

3 * 125 = \pi * r ^ 2 * 12\\\frac {3 * 125} {12 \pi} = r ^ 2\\9.9522 = r ^ 2\\r = \pm \sqrt {9.9522}

We choose the positive value:

r = 3.1547

We round and we have that the radius of the cone is:

r = 3.16 \ cm

ANswer:

r = 3.16 \ cm

4 0
3 years ago
Angles B And W are supplementary. Angle B has a measure of (4x+16) .Angle W has a measure of 68 .what is the value of x
Yuri [45]

Answer:

24

Step-by-step explanation:

4x+16 + 68 = 180

4x + 84 = 180

4x = 96

x = 24

8 0
3 years ago
Find the volume of this sphere.<br> Use 3 for TT.
Mama L [17]

¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿¿???????????????

Very sry to tell that I really don't know it...

3 0
3 years ago
The length of a city block running north to south in New York City is about 5x10^-2 miles. The distance from New York City to Mu
ratelena [41]

Answer:

<h2>15×10^4 </h2><h2>OR</h2><h2>150000</h2>

Step-by-step explanation:

Length of New York City Block = 5×10^-2

Distance from New York to Mumbai = 7.5×10^-3

The distance from new York City to Mumbai is about how many times the length of a New York City north-south block =

5 \times 10^-^2 \times x=7.5 \times 10^3

Solve the equation

5\times \:10^{-2}x=7.5\times \:10^3\\\\10^3=1000\\\\5\times \:10^{-2}x=1000\times \:7.5\\\\\mathrm{Multiply\:the\:numbers:}\:7.5\times \:1000=7500\\\\5\times \:10^{-2}x=7500\\\\Simplify\:5\times \:10^{-2} :\:\frac{1}{20} \\\\\frac{1}{20}x=7500\\\\\mathrm{Multiply\:both\:sides\:by\:}20\\\\20\times \frac{1}{20}x=7500\times \:20\\\\Simplify\\\\x=150000\\\\x = 15\times 10^4

5 0
3 years ago
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